Home / 12,086.76-16,680.96-6,781.56

Finding the Fourth Proportional to 12,086.76, 16,680.96 and 6,781.56

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Solution

The fourth proportional to 12,086.76, 16,680.96 and 6,781.56 is: 9,359.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.76 : 16,680.96 = 6,781.56 : x
  2. Step 2: Convert to fraction form
    12,086.76/16,680.96 = 6,781.56/x
  3. Step 3: Cross multiply
    12,086.76x = 16,680.96 × 6,781.56
  4. Step 4: Simplify right side
    12,086.76x = 113,122,931.10
  5. Step 5: Solve for x
    x = 113,122,931.10/12,086.76
  6. Step 6: Final answer
    x = 9,359.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.